2nd Grade Number Bonds Over 20 Worksheets

Number bonds over 20 appear primarily in second grade elementary school curricula, where students extend their understanding of part-whole relationships to larger numbers. At this level, students move beyond the foundational bonds to 10 and 20 they mastered in first grade and begin working with landmark numbers like 35, 100, and 1000 that require stronger place value understanding.

The progression within second grade becomes increasingly sophisticated. Students typically start with making smaller totals like 35 using various addends, then advance to making 100 with multiples of 10, before tackling the more complex challenge of making 1000 using three numbers with multiples of 10 or 100. This scaffolded approach ensures students develop the flexibility with number relationships they'll need for multi-digit addition and subtraction later in the year and into third grade.

These worksheets provide systematic practice with different bond structures, from fill-in-the-blank formats that build flexibility to focused exercises on specific totals like 35, 100, or 1000. The variety of subtopics allows teachers to target exactly where students need support, whether that's recognizing patterns with multiples of 10 or extending thinking to three-number combinations. Answer keys make these worksheets particularly useful for quick formative assessment during whole-class instruction.

Many teachers use these worksheets during math centers or stations, pairing students so they can discuss their reasoning when finding missing numbers. They work equally well for differentiated homework assignments, allowing students who need more practice with making 100 to focus there while others tackle the more challenging 1000 bonds. Teachers also find these valuable for intervention groups, where the clear structure helps struggling students build confidence before rejoining whole-class instruction on multi-digit operations.